For full-size high-res. examples > click on image > flickr > Actions > View all sizes > Original
These are full size. I haven't resized either file in these (though there are two examples of that later) Its important to show that the Sony files are larger, since thats what people who buy and use the camera are going to shoot and use. I've also compared the Olympus at ISO 200 and the Sony at ISO 100. Again important to show, since those of us who want the best quality possible are always going to use the cameras base ISO setting. So the Olympus has to stand or fall by what it sets for this, in this case 200.
The following are examples of the High ISO jpg. output at 1600, 3200, 6400 and if you have the stomach for it 25,600 for the OM-D and 16,000 for the NEX-7
The following are two comparisons from raw files again shot at the lowest ISO possible for each camera. In the first example the Olympus file has been upsized to match the Sony and in the second the Sony file has been downsized to match the Olympus.
OM-D image processed in Capture One Pro Vers. 6 and the NEX-7 image in Adobe Camera Raw 7 in Photoshop CS6 (Beta) As per usual both images edited, to my personal taste, in Photoshop. Raw file links (possibly!) are below.